From mboxrd@z Thu Jan 1 00:00:00 1970 From: Philippe Gerum In-Reply-To: <1308652557.2125.45.camel@domain.hid> References: <3FF315C710820E47A04E55C6F7D9B0AD7FE9FF@AREXCH02.mra.roland-man.biz> <1308044391.2699.2.camel@domain.hid> <3FF315C710820E47A04E55C6F7D9B0AD7FEA2C@AREXCH02.mra.roland-man.biz> <1308387052.2122.14.camel@domain.hid> <4DFCABDA.6000702@domain.hid> <1308406918.2122.24.camel@domain.hid> <3FF315C710820E47A04E55C6F7D9B0AD7FECDA@AREXCH02.mra.roland-man.biz> <1308652557.2125.45.camel@domain.hid> Content-Type: text/plain; charset="UTF-8" Date: Sun, 03 Jul 2011 17:48:26 +0200 Message-ID: <1309708106.2127.0.camel@domain.hid> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai-help] Xenomai 2.5.6 with PPC-Kernel 2.4.25 List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: roderik.wildenburg@domain.hid Cc: xenomai@xenomai.org On Tue, 2011-06-21 at 12:35 +0200, Philippe Gerum wrote: > On Tue, 2011-06-21 at 12:04 +0200, roderik.wildenburg@domain.hid > wrote: > > I confirm that switchtest runs (nearly) perfectly on PPC-Kernel 2.6.34 with Xenomai 2.5.6. The only anomaly I could see is a "collapse" of the number of context switches exactly every 7 seconds by 2% (see below). Is this worth to pay attention to? (No other Xenomai-Task is running except for a watchdog task with a period of 500ms) > > 2% off seems a lot for a transient load, and this would not happen on a > periodic basis anyway. This needs to be investigated. Could you run > switchtest in nofpu mode? > > > > > On the opposite, switchtest runs erratic on PPC-2.4.25 with Xenomai 2.5.6 as you already mentioned: The number of context switches is much smaller then (only about 2%) with PPC-2.6.34 and fluctuate very much (see below). > > Do you think you will find some spare time to fix this Problem? > > > > Spare time has become a luxury over the last months. I'll try to find a > time slot next week to have a look at this again. This should help, no I-pipe update needed. http://git.xenomai.org/?p=xenomai-rpm.git;a=commit;h=35e9df567e19410526089e24fbbaf92c47de9c43 -- Philippe.